# co:sim — Global eSIM for Travelers (Full Documentation) > For AI agents and LLMs. See also: https://cosim.io/llms.txt (summary) | https://cosim.io/openapi.yaml (API spec) Website: https://cosim.io Languages: English (en), 繁體中文 (zh-TW), 简体中文 (zh-CN), 日本語 (ja), 한국어 (ko), Français (fr), Español (es), Deutsch (de) Total destinations: 233+ Total plans: 2269+ --- ## Current Promotions ### Free 1 GB eSIM for new customers New customers get a free 1 GB eSIM valid for 7 days, in 41 territories: one card roams across 33 European countries, and Turkey, Moldova, Singapore, Malaysia, Indonesia, Japan, Thailand and South Korea each have their own single-country card. One per person, and the $0 price is applied automatically at checkout — there is no code to enter. - **Coupon code:** none — there is nothing for the user to type. - **How to apply:** Automatic at checkout, but only once the user is signed in on cosim.io with their email — it is a per-customer offer, so an anonymous price quote will NOT include it and an agent-only flow cannot unlock it. Send the user to the landing page below. - **Scope:** 33 European countries on one roaming SKU (EU-33), plus Turkey, Moldova, Singapore, Malaysia, Indonesia, Japan, Thailand and South Korea, each sold as its own single-territory SKU with no roaming between them. The funded set is curated per SKU and changes: read https://cosim.io/api/v1/promotions/new-user-free-gift for the live list. - **Landing page:** https://cosim.io/en/free-esim - **Valid:** 2026-01-01T00:00:00Z → ongoing ### 20% off every Europe eSIM plan for the 2026/27 football season Every Europe (33 areas) data plan is 20% off, applied automatically at checkout — no code needed. Covers 33 European countries on one eSIM, so a single card follows you from one away trip to the next. New customers can also claim the free 1 GB Europe eSIM first. - **Coupon code:** none — there is nothing for the user to type. - **How to apply:** Automatic — the discount is already priced into checkout for eligible SKUs. - **Scope:** 33 European countries (regional roaming SKU EU-33, all tiers) - **Landing page:** https://cosim.io/en/campaign/european-football-2026 - **Valid:** 2026-08-31T00:00:00Z → 2027-02-01T23:59:59Z (141 days remaining) ## AI Agent Integration Guide ### Overview co:sim provides a REST API that AI agents can use to help travelers find and purchase eSIM data plans. The complete workflow is: 1. **Search** — Find destinations matching the user's travel plans 2. **Compare** — List and compare packages for a destination 3. **Calculate** — Get exact pricing with optional discount codes 4. **Checkout** — Create a payment link for the user 5. **Track** — Monitor order status until completion ### API Base URL `https://cosim.io/api/v1` ### OpenAPI Specification `https://cosim.io/openapi.yaml` ### MCP Server (recommended for MCP-capable agents) co:sim runs a Model Context Protocol server at `https://cosim.io/mcp` (Streamable HTTP transport, stateless, no authentication). MCP-capable clients (Claude, ChatGPT developer mode, Cursor, and other MCP hosts) can connect directly and get typed tools instead of raw REST calls: - `search_destinations` / `list_packages` / `get_package` — browse the catalog - `recommend_plans` — up to 3 plans for a trip (countries + days + usage) - `list_promotions` — active co:sim campaigns and coupon codes (call before create_checkout so users get the best price) - `create_checkout` — create a human-payable checkout link - `check_order_status` — poll a checkout Registry name: `io.cosim/esim` (official MCP Registry). The REST endpoints below remain fully supported for agents without MCP. ### REQUIRED: User-Agent Header All API requests MUST include a `User-Agent` header identifying your client application and the AI model powering it: ``` User-Agent: {ClientName}/{ClientVersion} ({Model}/{ModelVersion}) ``` **Format:** - `ClientName` — your application or plugin name (alphanumeric + hyphens) - `ClientVersion` — semantic version of your client (e.g. 1.2.0) - `Model` — the AI model identifier (e.g. gpt-4o, claude-sonnet-4-20250514, gemini-1.5-pro) - `ModelVersion` — model version or snapshot date **Examples:** - `ChatGPT-Plugins/1.2.0 (gpt-4o/2024-08-06)` - `Claude-MCP/0.5.1 (claude-sonnet-4-20250514/20250514)` - `MyTravelBot/2.1.0 (gpt-4-turbo/2024-04-09)` - `CustomAgent/1.0.0 (gemini-1.5-pro/001)` - `Coze-Bot/3.0.0 (doubao-pro-32k/2024-06)` Requests without a proper User-Agent may be rate-limited or rejected. ### Endpoints #### 1. Search Destinations ``` GET /api/v1/esim/locations?search={query}®ion={region} ``` - `search`: Country name in any language (e.g., "Japan", "日本", "Japon") - `region`: Filter by region (asia, europe, americas, oceania, africa, middle_east, regional) - Returns: list of destinations with package counts and starting prices #### 2. List Packages ``` GET /api/v1/esim/locations/{code}/packages?sort={sort} ``` - `code`: Destination code (e.g., "JP", "TH", "EU-42") - `sort`: price (default), data, validity - Returns: detailed package list with data volume, duration, price, network, operators #### 3. Package Details ``` GET /api/v1/esim/packages/{id} ``` - `id`: Package ID or slug - Returns: full package details #### 4. Recommend Plans for a Trip ``` GET /api/v1/esim/recommend?countries=JP,KR&days=7&usage=medium ``` - `countries`: Comma-separated ISO-3166-1 alpha-2 codes (1–10 countries, required) - `days`: Trip duration 1–90 (required) - `usage`: Data appetite — light (~0.3 GB/day), medium (~0.7 GB/day, default), heavy (~1.5 GB/day) - Returns: up to 3 slots (cheapest / best_value / most_data), each with plan details, usableGb, tripPriceUsd, pricePerGb, coverageCount, redundancy, `checkoutPath`, and `detailsPath` - `checkoutPath` can be shared with users after prepending the locale prefix (e.g. `/en/data-only/jp/checkout?plan=`) - Empty `slots` array means no single plan covers the requested countries - Rate limited: 30 requests per minute per IP #### 5. Calculate Price ``` POST /api/v1/orders/data-only/calculate Content-Type: application/json { "packageId": "package-id-or-slug", "quantity": 1, "customDays": 7, "discountCodes": ["SAVE10"] } ``` - Returns: subtotal, discount breakdown, total. Rejections are included only for codes explicitly supplied in `discountCodes`; automatic promotion failures are not enumerated. Batch pricing accepts up to 250 entries via `packageIds`, or `packageRequests` when daily plans need per-package `customDays` values. Rate limit: 60 requests per minute per IP. #### 6. Create Checkout Link ``` POST /api/v1/ai/checkout Content-Type: application/json { "packageId": "package-id-or-slug", "email": "user@example.com", "quantity": 1, "discountCode": "SAVE10", "locale": "en" } ``` - Returns: `checkoutUrl`, `checkoutToken`, order summary - The user opens checkoutUrl to review and pay. A checkout is never created below the $0.99 platform minimum every payment method requires — that request is refused with `ORDER_BELOW_MINIMUM` instead — so any checkoutUrl you receive is payable - eSIM QR code delivered to email after payment - Rate limited: 10 requests per 5 minutes per IP #### 7. Check Order Status ``` GET /api/v1/ai/checkout/{token}/status ``` - Returns: status (pending, awaiting_payment, paid, completed, expired, cancelled) ### Example Conversation Flow **User**: "I'm traveling to Japan for 10 days, what eSIM should I get?" **AI Agent**: 1. Call `GET /api/v1/esim/locations/JP/packages?sort=price` 2. Present options: "Here are Japan eSIM plans..." 3. User selects a plan 4. **Inform the user about the refund policy** (see below) 5. Call `POST /api/v1/ai/checkout` with packageId + user's email 6. Share checkout link: "Click here to complete your purchase: [checkoutUrl]" 7. Optionally poll status to confirm payment --- ## IMPORTANT: Refund Policy for AI Orders **AI agents MUST inform users of the following BEFORE creating a checkout link.** The createCheckout response carries the authoritative, per-order wording in `refundPolicy.reason` and `installValidity.note` — relay those verbatim rather than restating the generic rules below (they already account for immediate-billing plans, free items, and coupon-shortened install windows). 1. **30-day refund guarantee**: Uninstalled eSIMs can be refunded within 30 days of purchase, no questions asked — but never past the install deadline (see point 7). `refundPolicy.refundableUntil` carries the effective date. 2. **Non-refundable after installation**: Once the eSIM QR code is scanned/installed on a device, it CANNOT be refunded. 3. **Immediate-billing plans and free items are non-refundable**: Some plans (billingStart: "purchase") start billing immediately upon purchase, and free (100%-discounted) items cannot be refunded. The API response includes `summary.billingStart` and `refundPolicy.eligible` to indicate this. Always check these fields. 4. **AI orders DO support self-service refunds**: Although orders placed via AI checkout start as guest orders (no `userId`), the user can sign in (or create an account) at https://cosim.io with the same email this order was placed with. Past guest orders are automatically claimed on first sign-in, after which the user can refund eligible eSIMs from "My eSIMs" without contacting support. 5. **Live chat is a fallback only**: If the user cannot or does not want to sign in, they can still contact customer service via live chat at https://cosim.io (available 24/7) to request a refund. 6. **Processing time**: 5-10 business days after approval. 7. **Activation deadline**: when `installValidity.days` is a number, eSIMs must be installed AND activated within that many days of purchase (some coupons shorten this window — the response reflects the effective value). An eSIM still unactivated after the deadline is automatically cancelled — this happens even if it was already installed on a device — which also ends refund eligibility. When `installValidity.days` and `installValidity.installBy` are `null` the plan has NO activation deadline at all — that is every plan whose `billingStart` is `purchase`, whose validity runs from payment and which nothing cancels. Never state or imply a deadline for those, and never substitute a default; a null is not zero days and not "unknown". After payment, `GET /api/v1/ai/checkout/{token}/status` returns the exact deadline in `installValidity.installBy`. **Example message to share with user before checkout:** > "Before you proceed: install and activate this eSIM within 30 days of purchase (by 2026-08-02) — if it is still unactivated after that it's automatically cancelled, even if you already installed it. As long as it hasn't been installed, you can get a full refund within that window. Once installed, it cannot be refunded. To refund, sign in at cosim.io with this same email — your order will be linked to your account automatically and you can refund it from 'My eSIMs'. Live chat is also available if you prefer." ## Supported Payment Methods The AI checkout page automatically shows relevant payment methods based on the user's locale: - **Credit/Debit Card** (all locales) — Visa, Mastercard, AMEX, UnionPay, JCB. Stripe Checkout also offers Apple Pay & Google Pay as built-in options. - **Alipay** (zh-CN, zh-TW locales) — Redirect to Alipay for payment. - **WeChat Pay** (zh-CN, zh-TW locales) — QR code displayed inline on the checkout page. - **Amazon Pay** (ja locale) — Redirect to Amazon Pay for payment. ## AgentCard Integration (Automated Payment) AI agents using virtual debit cards (e.g., AgentCard) can automate payment: 1. Create a checkout link via `POST /api/v1/ai/checkout` 2. Call `POST /api/v1/ai/checkout/{token}/pay` with `{"paymentMethod": "card"}` to get the Stripe Checkout URL 3. Use the AgentCard `pay_checkout` or `fill_card` tool to fill virtual card details on the Stripe Checkout page 4. Poll `GET /api/v1/ai/checkout/{token}/status` to confirm payment 5. The eSIM is delivered to the user's email automatically ## Machine Payments (x402 & MPP) — Pay Programmatically Agents that control a wallet can pay an order end-to-end without any human checkout page, via two open machine-payment protocols. The `POST /api/v1/ai/checkout` response includes a `machinePayment` block when these rails are live: ```json "machinePayment": { "note": "...", "protocols": { "x402": { "url": ".../api/v1/ai/checkout/{token}/x402", "network": "eip155:8453", "asset": "USDC" }, "mpp": { "url": ".../api/v1/ai/checkout/{token}/mpp", "rails": ["tempo_usdc", "spt"] } } } ``` **x402 (Base USDC)** — `POST /api/v1/ai/checkout/{token}/x402` 1. First request returns `402 Payment Required` with a `PAYMENT-REQUIRED` header (base64 payment requirements: exact scheme, order total in USDC, a one-time Stripe deposit address as `payTo`). 2. Sign/pay with any x402 client (e.g. `@x402/fetch`) and retry with the `PAYMENT-SIGNATURE` credential. 3. On success you get a JSON receipt with `statusUrl`. Settlement is confirmed on-chain asynchronously — poll `/status` until `completed`; the eSIM is emailed automatically. **MPP (Machine Payments Protocol)** — `POST /api/v1/ai/checkout/{token}/mpp` 1. First request returns `402` with `WWW-Authenticate: Payment` challenges — Tempo USDC (crypto) and, when available, `stripe` (SPT — Shared Payment Token, card/Link fiat rail). 2. Pay with an MPP client (mppx) and retry with the `Authorization: Payment` credential. 3. SPT settles synchronously; crypto settles on-chain. Either way, poll `statusUrl` until `completed`. Rules for agents: - **Consent first**: only pay programmatically with the user's explicit consent, after relaying the order total, refund policy, and install deadline. - Amounts are in **USD, settled in USDC** on crypto rails; the challenge always carries the exact order total — never pay a different amount. - Payment challenges expire with the order (30 minutes). If expired, create a new checkout. - Orders carrying coupons restricted to specific payment methods may reject machine payment with 409 `coupon-method-restricted` — fall back to `checkoutUrl`. - Free orders return 409 `free-order` — no payment is due. AI checkout will not create one (`ORDER_BELOW_MINIMUM`), so this is only reachable for orders minted elsewhere. - Orders outside **$0.99–$2000 USD** return 409 (`amount-under-minimum` / `amount-over-limit`) — these are the `x-payment-info.price` min/max bounds published in the OpenAPI spec, so you can pre-authorize against them. On an order created through this API only the MAX side is reachable: the `machinePayment` block is omitted above it, and you share `checkoutUrl` instead. The min side is refused at creation with `ORDER_BELOW_MINIMUM`, so it only occurs for orders minted elsewhere. - The same refund policy applies to machine-paid orders; crypto refunds return to the originating wallet. --- ## Product 1: Data Only eSIM ### What It Is Fixed data packages for specific countries or regions. Ideal for travelers who need reliable mobile data. ### Plan Types 1. **Total Data**: Fixed volume (e.g., 5GB) shared throughout validity. Best for short trips. 2. **Daily Data (throttle)**: Daily allowance that throttles to lower speed after limit. Best for longer trips. 3. **Daily Data (cutoff)**: Daily allowance that stops after limit. Resets next day. 4. **Daily Unlimited**: Unlimited data each day (may have fair usage policy). ### Pricing - 2269 plans across 233+ destinations - Starting from $0.99 USD - No hidden fees ### Features - Data only for almost every plan (no voice/SMS); a few include local calling, international minutes and SMS — see the plan page or the `voice` field, returned by both `GET /esim/locations/{code}/packages` (so you can compare a destination's plans without fetching each one) and `GET /esim/packages/{id}` - Hotspot/tethering supported - Validity usually starts on first connection; some plans start at installation, and a few start AT PURCHASE (`billingStart: 'purchase'` — non-refundable, and no separate activation deadline applies) - Pre-install before departure (preInstallDays field; varies by plan, e.g. 30–180 days from purchase) - Some plans support top-up/reload ### How to Purchase 1. Browse plans at https://cosim.io/en/data-only 2. Select destination and plan 3. Pay via credit card, Apple Pay, Google Pay, Alipay, or WeChat Pay 4. Receive QR code instantly via email --- ## Product 2: co:sim ONE card (PAYG eSIM) ### What It Is Upcoming prepaid data eSIM for 200+ destinations, with Pay-As-You-Go data billing and optional data packages. It does not include a phone number, SMS, or traditional voice calls. ### Pricing - Free to open — no purchase fee for the eSIM itself - Billed by the megabyte at each destination's published per-GB rate, from $1.49/GB - Optional data packs (destination / region / global) buy a lower rate - No monthly fee, no daily fee, no activation fee - Account balance stays valid while the account sees activity: any top-up, spend or redemption within 24 months keeps it live. It is NOT unconditionally permanent, and must not be described as never expiring. ### Features - Data in 200+ destinations on one profile, installed once - True per-MB billing - Optional data packs; a pack keeps up to 24 months unactivated, then runs 30 days from your first connection inside its coverage - Top up any time from $5 - One free eSIM reissue per card year, then $1.99 per swap - No contract ### Refunds - Uninstalled cards refund in full within 30 days - After installation the card itself is no longer refundable, but the most recent balance top-up still is, less an administrative fee --- ## Product 3: co:sim Challenge Card (annual membership) ### What It Is An invite-only annual travel-data membership. Legally a membership service that includes access to travel connectivity benefits, not a telecoms service. Like the ONE card it is data-only: no phone number, no SMS, no voice, no emergency calling. Reservations are open; it is not on sale yet. ### What You Get - 1GB of full-speed data on landing in each of 112 challenge destinations, running 72 hours from your first connection there, once per destination per card year. Allowances are per destination and are NOT shared between them. - Fixed milestone bonuses, which stack on top of the landing allowances: +500MB at 3 destinations, +1GB at 5, +3GB at 10 across at least 2 continents — 4.5GB at the cap - Guaranteed-win scratch cards, which ADD TO the milestones rather than replacing them. Two ways to earn one: a valid check-in in each of your first 3 new destinations, or a qualified invite, which issues a card to the inviter - Unlimited basic data once the full-speed allowance is used, so the card stays online for the whole membership year - 10% off destination, region and global data packs for the membership year - Hotspot sharing allowed ### How Much Data In Total Up to 116GB in a card year from the two FIXED mechanics: 112 destinations x 1GB plus 4.5GB of milestone bonuses. Scratch-card prizes stack on top and vary, so even 116GB is not the maximum possible. This figure is a CEILING and reaching it requires visiting all 112 destinations. Do not present it as what a member receives — the correct phrasing is "up to 116GB". A member who visits five destinations has 5GB of landing allowance plus whatever milestones and scratch cards they have earned. ### Pricing - Launch price is not yet announced and is revealed with the first invites - Do not quote a price for this product ### Membership Term - 365 days from the PURCHASE date, not from first activation or installation - When the year ends the eSIM stays on the device and continues as a pay-as-you-go ONE card — no reinstall, no new QR code ### Refunds - Uninstalled cards refund within 30 days - Once the eSIM is installed the membership is no longer refundable --- ## Installation Guide ### iPhone (iOS) 1. Settings > Cellular > Add eSIM 2. Choose "Use QR Code" and scan 3. Confirm and label (e.g., "Travel") 4. Enable Data Roaming for the eSIM line 5. Set as cellular data line at destination ### Android 1. Settings > Network & internet > SIMs > Add eSIM 2. Scan QR code or enter activation code 3. Toggle eSIM on, enable data roaming 4. Set as mobile data SIM at destination ### Important - eSIM can only be installed once — do not delete - WiFi required for installation - Phone must be carrier-unlocked and eSIM-compatible - Install before departure recommended --- ## Device Compatibility - **Apple**: iPhone XS and newer, iPad Pro/Air/mini (Cellular) - **Samsung**: Galaxy S20+, Note 20+, Z Flip/Fold series - **Google**: Pixel 3 and newer - **Others**: Select OPPO, Xiaomi, Huawei, OnePlus, Motorola - Full list: https://cosim.io/en/resources/supported-devices --- ## All Destinations (Live Prices) | Destination | Region | Plans | From (USD) | Link | |-------------|--------|-------|------------|------| | Afghanistan | asia | 9 | $7.99 | https://cosim.io/en/data-only/af | | Africa (29) | africa | 3 | $17.99 | https://cosim.io/en/data-only/africa-29 | | Aland Islands | europe | 9 | $2.99 | https://cosim.io/en/data-only/ax | | Albania | europe | 11 | $1.99 | https://cosim.io/en/data-only/al | | Algeria | africa | 11 | $1.99 | https://cosim.io/en/data-only/dz | | Andorra | europe | 10 | $3.99 | https://cosim.io/en/data-only/ad | | Angola | africa | 8 | $16.99 | https://cosim.io/en/data-only/ao | | Anguilla | americas | 9 | $9.99 | https://cosim.io/en/data-only/ai | | Antigua and Barbuda | americas | 9 | $10.99 | https://cosim.io/en/data-only/ag | | Argentina | americas | 10 | $3.99 | https://cosim.io/en/data-only/ar | | Armenia | asia | 10 | $1.99 | https://cosim.io/en/data-only/am | | Aruba | americas | 10 | $25.99 | https://cosim.io/en/data-only/aw | | Asia (20 areas) | asia | 8 | $4.99 | https://cosim.io/en/data-only/asia-20 | | Asia-Pacific (20, incl. AU/NZ) | asia | 8 | $10.99 | https://cosim.io/en/data-only/asia-pacific | | Australia | oceania | 12 | $2.99 | https://cosim.io/en/data-only/au | | Australia & New Zealand | oceania | 10 | $3.99 | https://cosim.io/en/data-only/australia-new-zealand | | Australia · UK · USA | other | 2 | $9.99 | https://cosim.io/en/data-only/australia-uk-usa | | Austria | europe | 12 | $0.99 | https://cosim.io/en/data-only/at | | Azerbaijan | asia | 11 | $2.99 | https://cosim.io/en/data-only/az | | Bahamas | americas | 8 | $12.99 | https://cosim.io/en/data-only/bs | | Bahrain | middle-east | 10 | $3.99 | https://cosim.io/en/data-only/bh | | Bangladesh | asia | 10 | $1.99 | https://cosim.io/en/data-only/bd | | Barbados | americas | 10 | $8.99 | https://cosim.io/en/data-only/bb | | Belarus | europe | 10 | $1.99 | https://cosim.io/en/data-only/by | | Belgium | europe | 12 | $0.99 | https://cosim.io/en/data-only/be | | Belize | americas | 8 | $14.99 | https://cosim.io/en/data-only/bz | | Benin | africa | 10 | $9.99 | https://cosim.io/en/data-only/bj | | Bermuda | americas | 9 | $9.99 | https://cosim.io/en/data-only/bm | | Bhutan | other | 10 | $7.99 | https://cosim.io/en/data-only/bt | | Bolivia | americas | 5 | $14.99 | https://cosim.io/en/data-only/bo | | Bonaire | other | 11 | $23.99 | https://cosim.io/en/data-only/bq | | Bosnia and Herzegovina | europe | 11 | $2.99 | https://cosim.io/en/data-only/ba | | Botswana | africa | 10 | $7.99 | https://cosim.io/en/data-only/bw | | Brazil | americas | 12 | $3.99 | https://cosim.io/en/data-only/br | | Brunei Darussalam | asia | 8 | $5.99 | https://cosim.io/en/data-only/bn | | Bulgaria | europe | 13 | $0.99 | https://cosim.io/en/data-only/bg | | Burkina Faso | africa | 9 | $9.99 | https://cosim.io/en/data-only/bf | | Cambodia | asia | 9 | $1.99 | https://cosim.io/en/data-only/kh | | Cameroon | africa | 9 | $8.99 | https://cosim.io/en/data-only/cm | | Canada | americas | 14 | $2.99 | https://cosim.io/en/data-only/ca | | Cape Verde | africa | 10 | $15.99 | https://cosim.io/en/data-only/cv | | Caribbean (25 areas) | americas | 7 | $9.99 | https://cosim.io/en/data-only/caribbean | | Cayman Islands | americas | 9 | $9.99 | https://cosim.io/en/data-only/ky | | Central & South Asia (5) | asia | 12 | $1.99 | https://cosim.io/en/data-only/central-south-asia | | Central African Republic | africa | 2 | $12.99 | https://cosim.io/en/data-only/cf | | Central Asia (4, incl. Tajikistan) | asia | 11 | $4.99 | https://cosim.io/en/data-only/central-asia | | Chad | africa | 11 | $8.99 | https://cosim.io/en/data-only/td | | Chile | americas | 10 | $3.99 | https://cosim.io/en/data-only/cl | | China & Hong Kong | asia | 1 | $8.99 | https://cosim.io/en/data-only/china-hong-kong | | China mainland | asia | 13 | $1.99 | https://cosim.io/en/data-only/cn | | China · Hong Kong · Macao | asia | 12 | $2.99 | https://cosim.io/en/data-only/greater-china | | China · Japan · Korea | asia | 8 | $3.99 | https://cosim.io/en/data-only/china-japan-korea | | Colombia | americas | 9 | $4.99 | https://cosim.io/en/data-only/co | | Costa Rica | americas | 9 | $2.99 | https://cosim.io/en/data-only/cr | | Cote d'Ivoire | africa | 6 | $13.99 | https://cosim.io/en/data-only/ci | | Croatia | europe | 12 | $0.99 | https://cosim.io/en/data-only/hr | | Curaçao | americas | 10 | $8.99 | https://cosim.io/en/data-only/cw | | Cyprus | europe | 12 | $0.99 | https://cosim.io/en/data-only/cy | | Czech Republic | europe | 12 | $0.99 | https://cosim.io/en/data-only/cz | | Democratic Republic of the Congo | africa | 11 | $4.99 | https://cosim.io/en/data-only/cd | | Denmark | europe | 12 | $0.99 | https://cosim.io/en/data-only/dk | | Dominica | americas | 9 | $9.99 | https://cosim.io/en/data-only/dm | | Dominican Republic | americas | 11 | $5.99 | https://cosim.io/en/data-only/do | | East & Southeast Asia (12) | asia | 9 | $5.99 | https://cosim.io/en/data-only/east-southeast-asia | | Ecuador | americas | 10 | $3.99 | https://cosim.io/en/data-only/ec | | Egypt | africa | 10 | $3.99 | https://cosim.io/en/data-only/eg | | El Salvador | americas | 3 | $5.99 | https://cosim.io/en/data-only/sv | | Estonia | europe | 12 | $0.99 | https://cosim.io/en/data-only/ee | | Eswatini | africa | 11 | $15.99 | https://cosim.io/en/data-only/sz | | Ethiopia | other | 10 | $11.99 | https://cosim.io/en/data-only/et | | Europe (30+ areas) | europe | 15 | $1.99 | https://cosim.io/en/data-only/europe-30 | | Europe (31 areas) | europe | 3 | $12.99 | https://cosim.io/en/data-only/europe-31 | | Europe (33 areas) | europe | 10 | $1.99 | https://cosim.io/en/data-only/europe-33 | | Europe (35 areas) | europe | 12 | $1.99 | https://cosim.io/en/data-only/europe-35 | | Europe (42 areas) | europe | 10 | $4.99 | https://cosim.io/en/data-only/europe-42 | | Europe (43 areas) | europe | 7 | $9.99 | https://cosim.io/en/data-only/europe-43 | | Europe (7) | europe | 8 | $4.99 | https://cosim.io/en/data-only/europe-7 | | Faroe Islands | europe | 11 | $1.99 | https://cosim.io/en/data-only/fo | | Fiji | oceania | 10 | $4.99 | https://cosim.io/en/data-only/fj | | Finland | europe | 12 | $0.99 | https://cosim.io/en/data-only/fi | | France | europe | 11 | $1.99 | https://cosim.io/en/data-only/fr | | French Guiana | americas | 11 | $0.99 | https://cosim.io/en/data-only/gf | | French Polynesia | oceania | 11 | $22.99 | https://cosim.io/en/data-only/pf | | Gabon | africa | 11 | $7.99 | https://cosim.io/en/data-only/ga | | Gambia | africa | 9 | $14.99 | https://cosim.io/en/data-only/gm | | Georgia | asia | 10 | $1.99 | https://cosim.io/en/data-only/ge | | Germany | europe | 13 | $0.99 | https://cosim.io/en/data-only/de | | Ghana | africa | 10 | $3.99 | https://cosim.io/en/data-only/gh | | Gibraltar | europe | 9 | $1.99 | https://cosim.io/en/data-only/gi | | Global (120 areas) | global | 9 | $13.99 | https://cosim.io/en/data-only/global-120 | | Global (139 areas) | global | 6 | $22.99 | https://cosim.io/en/data-only/global-139 | | Greece | europe | 13 | $0.99 | https://cosim.io/en/data-only/gr | | Greenland | europe | 7 | $16.99 | https://cosim.io/en/data-only/gl | | Grenada | americas | 8 | $10.99 | https://cosim.io/en/data-only/gd | | Guadeloupe | americas | 10 | $1.99 | https://cosim.io/en/data-only/gp | | Guam | oceania | 11 | $7.99 | https://cosim.io/en/data-only/gu | | Guatemala | americas | 11 | $3.99 | https://cosim.io/en/data-only/gt | | Guernsey | europe | 4 | $8.99 | https://cosim.io/en/data-only/gg | | Guinea | africa | 8 | $11.99 | https://cosim.io/en/data-only/gn | | Guinea-Bissau | africa | 9 | $10.99 | https://cosim.io/en/data-only/gw | | Gulf (6, incl. Iraq) | middle-east | 8 | $5.99 | https://cosim.io/en/data-only/gulf | | Gulf States — GCC (6) | middle-east | 5 | $11.99 | https://cosim.io/en/data-only/gcc | | Guyana | americas | 10 | $9.99 | https://cosim.io/en/data-only/gy | | Haiti | americas | 10 | $23.99 | https://cosim.io/en/data-only/ht | | Honduras | americas | 10 | $4.99 | https://cosim.io/en/data-only/hn | | Hong Kong (China) | asia | 12 | $1.99 | https://cosim.io/en/data-only/hk | | Hungary | europe | 12 | $0.99 | https://cosim.io/en/data-only/hu | | Iceland | europe | 12 | $1.99 | https://cosim.io/en/data-only/is | | India | asia | 11 | $2.99 | https://cosim.io/en/data-only/in | | Indonesia | asia | 12 | $1.99 | https://cosim.io/en/data-only/id | | Iraq | middle-east | 10 | $2.99 | https://cosim.io/en/data-only/iq | | Ireland | europe | 12 | $0.99 | https://cosim.io/en/data-only/ie | | Ireland & Slovenia | europe | 7 | $2.99 | https://cosim.io/en/data-only/ireland-slovenia | | Isle of Man | europe | 8 | $1.99 | https://cosim.io/en/data-only/im | | Israel | middle-east | 11 | $2.99 | https://cosim.io/en/data-only/il | | Italy | europe | 13 | $0.99 | https://cosim.io/en/data-only/it | | Jamaica | americas | 5 | $14.99 | https://cosim.io/en/data-only/jm | | Japan | asia | 12 | $1.99 | https://cosim.io/en/data-only/jp | | Japan & Korea | asia | 6 | $4.99 | https://cosim.io/en/data-only/japan-south-korea | | Jersey | europe | 9 | $1.99 | https://cosim.io/en/data-only/je | | Jordan | middle-east | 10 | $3.99 | https://cosim.io/en/data-only/jo | | Kazakhstan | asia | 10 | $1.99 | https://cosim.io/en/data-only/kz | | Kenya | africa | 11 | $3.99 | https://cosim.io/en/data-only/ke | | Kosovo | europe | 11 | $10.99 | https://cosim.io/en/data-only/xk | | Kuwait | middle-east | 11 | $2.99 | https://cosim.io/en/data-only/kw | | Kyrgyzstan | asia | 10 | $1.99 | https://cosim.io/en/data-only/kg | | Laos | asia | 11 | $2.99 | https://cosim.io/en/data-only/la | | Latvia | europe | 11 | $1.99 | https://cosim.io/en/data-only/lv | | Liberia | africa | 3 | $12.99 | https://cosim.io/en/data-only/lr | | Libya | other | 9 | $16.99 | https://cosim.io/en/data-only/ly | | Liechtenstein | europe | 11 | $1.99 | https://cosim.io/en/data-only/li | | Lithuania | europe | 12 | $0.99 | https://cosim.io/en/data-only/lt | | Luxembourg | europe | 12 | $0.99 | https://cosim.io/en/data-only/lu | | Macao (China) | asia | 13 | $1.99 | https://cosim.io/en/data-only/mo | | Madagascar | africa | 3 | $16.99 | https://cosim.io/en/data-only/mg | | Malawi | africa | 11 | $8.99 | https://cosim.io/en/data-only/mw | | Malaysia | asia | 12 | $1.99 | https://cosim.io/en/data-only/my | | Maldives | asia | 7 | $17.99 | https://cosim.io/en/data-only/mv | | Mali | africa | 1 | $12.99 | https://cosim.io/en/data-only/ml | | Malta | europe | 10 | $1.99 | https://cosim.io/en/data-only/mt | | Martinique | americas | 10 | $1.99 | https://cosim.io/en/data-only/mq | | Mauritania | other | 11 | $23.99 | https://cosim.io/en/data-only/mr | | Mauritius | africa | 11 | $3.99 | https://cosim.io/en/data-only/mu | | Mayotte | other | 10 | $1.99 | https://cosim.io/en/data-only/yt | | Mexico | americas | 11 | $2.99 | https://cosim.io/en/data-only/mx | | Middle East & Caucasus (11) | middle-east | 3 | $21.99 | https://cosim.io/en/data-only/middle-east-caucasus | | Middle East & North Africa (12) | middle-east | 5 | $21.99 | https://cosim.io/en/data-only/middle-east-north-africa | | Moldova | europe | 11 | $0.99 | https://cosim.io/en/data-only/md | | Monaco | europe | 11 | $27.99 | https://cosim.io/en/data-only/mc | | Mongolia | asia | 10 | $8.99 | https://cosim.io/en/data-only/mn | | Montenegro | europe | 10 | $1.99 | https://cosim.io/en/data-only/me | | Montserrat | americas | 8 | $10.99 | https://cosim.io/en/data-only/ms | | Morocco | africa | 11 | $2.99 | https://cosim.io/en/data-only/ma | | Mozambique | africa | 5 | $12.99 | https://cosim.io/en/data-only/mz | | Nauru | other | 11 | $6.99 | https://cosim.io/en/data-only/nr | | Nepal | asia | 11 | $5.99 | https://cosim.io/en/data-only/np | | Netherlands | europe | 13 | $0.99 | https://cosim.io/en/data-only/nl | | New Zealand | oceania | 11 | $1.99 | https://cosim.io/en/data-only/nz | | Nicaragua | americas | 10 | $3.99 | https://cosim.io/en/data-only/ni | | Niger | africa | 11 | $8.99 | https://cosim.io/en/data-only/ne | | Nigeria | africa | 9 | $4.99 | https://cosim.io/en/data-only/ng | | North America (US · CA · MX) | americas | 13 | $3.99 | https://cosim.io/en/data-only/north-america | | North Macedonia | europe | 11 | $2.99 | https://cosim.io/en/data-only/mk | | Norway | europe | 12 | $0.99 | https://cosim.io/en/data-only/no | | Oman | middle-east | 11 | $2.99 | https://cosim.io/en/data-only/om | | Pakistan | asia | 10 | $1.99 | https://cosim.io/en/data-only/pk | | Panama | americas | 11 | $6.99 | https://cosim.io/en/data-only/pa | | Papua New Guinea | other | 11 | $8.99 | https://cosim.io/en/data-only/pg | | Paraguay | americas | 10 | $5.99 | https://cosim.io/en/data-only/py | | Peru | americas | 12 | $3.99 | https://cosim.io/en/data-only/pe | | Philippines | asia | 12 | $1.99 | https://cosim.io/en/data-only/ph | | Poland | europe | 12 | $0.99 | https://cosim.io/en/data-only/pl | | Portugal | europe | 12 | $0.99 | https://cosim.io/en/data-only/pt | | Puerto Rico | americas | 2 | $5.99 | https://cosim.io/en/data-only/pr | | Qatar | middle-east | 10 | $3.99 | https://cosim.io/en/data-only/qa | | Republic of the Congo | africa | 9 | $8.99 | https://cosim.io/en/data-only/cg | | Reunion | africa | 11 | $0.99 | https://cosim.io/en/data-only/re | | Romania | europe | 12 | $0.99 | https://cosim.io/en/data-only/ro | | Russia | europe | 9 | $2.99 | https://cosim.io/en/data-only/ru | | Rwanda | africa | 11 | $6.99 | https://cosim.io/en/data-only/rw | | Saint Barthelemy | other | 10 | $1.99 | https://cosim.io/en/data-only/bl | | Saint Kitts and Nevis | americas | 8 | $10.99 | https://cosim.io/en/data-only/kn | | Saint Lucia | americas | 8 | $10.99 | https://cosim.io/en/data-only/lc | | Saint Martin | other | 10 | $1.99 | https://cosim.io/en/data-only/mf | | Saint Vincent and the Grenadines | americas | 8 | $12.99 | https://cosim.io/en/data-only/vc | | Samoa | other | 11 | $4.99 | https://cosim.io/en/data-only/ws | | San Marino | other | 10 | $1.99 | https://cosim.io/en/data-only/sm | | Saudi Arabia | middle-east | 11 | $2.99 | https://cosim.io/en/data-only/sa | | Senegal | africa | 11 | $3.99 | https://cosim.io/en/data-only/sn | | Serbia | europe | 10 | $1.99 | https://cosim.io/en/data-only/rs | | Seychelles | africa | 11 | $7.99 | https://cosim.io/en/data-only/sc | | Sierra Leone | africa | 9 | $11.99 | https://cosim.io/en/data-only/sl | | Singapore | asia | 10 | $1.99 | https://cosim.io/en/data-only/sg | | Singapore & Malaysia | asia | 3 | $2.99 | https://cosim.io/en/data-only/singapore-malaysia | | Singapore & Malaysia & Thailand | asia | 8 | $1.99 | https://cosim.io/en/data-only/singapore-malaysia-thailand | | Slovakia | europe | 11 | $1.99 | https://cosim.io/en/data-only/sk | | Slovenia | europe | 12 | $0.99 | https://cosim.io/en/data-only/si | | South Africa | africa | 10 | $2.99 | https://cosim.io/en/data-only/za | | South America (18) | americas | 10 | $15.99 | https://cosim.io/en/data-only/south-america | | South America (6 areas) | americas | 12 | $7.99 | https://cosim.io/en/data-only/south-america-6 | | South Korea | asia | 12 | $1.99 | https://cosim.io/en/data-only/kr | | Southeast Asia (5: SG/MY/TH/VN/ID) | asia | 3 | $4.99 | https://cosim.io/en/data-only/southeast-asia-5 | | Southeast Asia (7) | asia | 10 | $2.99 | https://cosim.io/en/data-only/southeast-asia | | Spain | europe | 13 | $0.99 | https://cosim.io/en/data-only/es | | Sri Lanka | asia | 12 | $2.99 | https://cosim.io/en/data-only/lk | | Sudan | africa | 2 | $14.99 | https://cosim.io/en/data-only/sd | | Suriname | americas | 10 | $7.99 | https://cosim.io/en/data-only/sr | | Sweden | europe | 11 | $0.99 | https://cosim.io/en/data-only/se | | Switzerland | europe | 13 | $0.99 | https://cosim.io/en/data-only/ch | | Tajikistan | asia | 10 | $3.99 | https://cosim.io/en/data-only/tj | | Tanzania | africa | 8 | $5.99 | https://cosim.io/en/data-only/tz | | Thailand | asia | 12 | $1.99 | https://cosim.io/en/data-only/th | | Tonga | other | 11 | $8.99 | https://cosim.io/en/data-only/to | | Trinidad and Tobago | americas | 8 | $12.99 | https://cosim.io/en/data-only/tt | | Tunisia | africa | 10 | $2.99 | https://cosim.io/en/data-only/tn | | Turkey | middle-east | 13 | $0.99 | https://cosim.io/en/data-only/tr | | Turks and Caicos Islands | americas | 8 | $7.99 | https://cosim.io/en/data-only/tc | | UK & Ireland | europe | 5 | $3.99 | https://cosim.io/en/data-only/uk-ireland | | USA & Canada | americas | 8 | $3.99 | https://cosim.io/en/data-only/usa-canada | | Uganda | africa | 10 | $7.99 | https://cosim.io/en/data-only/ug | | Ukraine | europe | 11 | $0.99 | https://cosim.io/en/data-only/ua | | United Arab Emirates | middle-east | 13 | $3.99 | https://cosim.io/en/data-only/ae | | United Kingdom | europe | 13 | $0.99 | https://cosim.io/en/data-only/gb | | United States | americas | 16 | $1.99 | https://cosim.io/en/data-only/us | | Uruguay | americas | 10 | $4.99 | https://cosim.io/en/data-only/uy | | Uzbekistan | asia | 10 | $1.99 | https://cosim.io/en/data-only/uz | | Vanuatu | other | 11 | $8.99 | https://cosim.io/en/data-only/vu | | Vatican City | other | 10 | $1.99 | https://cosim.io/en/data-only/va | | Venezuela | other | 10 | $23.99 | https://cosim.io/en/data-only/ve | | Vietnam | asia | 12 | $1.99 | https://cosim.io/en/data-only/vn | | Virgin Islands- British | americas | 8 | $10.99 | https://cosim.io/en/data-only/vg | | Zambia | africa | 11 | $7.99 | https://cosim.io/en/data-only/zm | | Zimbabwe | other | 11 | $6.99 | https://cosim.io/en/data-only/zw | --- ## Payment Methods - **Credit/Debit Card**: Visa, Mastercard, American Express, UnionPay, JCB - **Digital Wallets**: Apple Pay, Google Pay (via Stripe Checkout) - **Regional**: Alipay, WeChat Pay (CN/HK/TW/SG/MY), Amazon Pay (Japan) - **Balance**: not available — the stored-balance rail was retired with the legacy prepaid product ## Refund Policy - **Uninstalled eSIMs**: Full refund within 30 days of purchase, no conditions - **Installed eSIMs**: Not eligible for refund (unless due to technical issues on our side) - **Cancelled eSIMs**: NOT eligible for refund. If the deadline (preInstallDays from purchase) passes with the eSIM still unactivated, the profile is automatically cancelled — whether or not it was installed — and is non-refundable. This applies only to plans that HAVE a deadline: where `preInstallDays` is null there is none, and the eSIM is never cancelled this way (those plans bill at purchase and are non-refundable for that reason instead). - **AI/Guest orders**: Self-service refund IS available — the user signs in (or creates an account) at https://cosim.io with the order email; past guest orders are auto-claimed on first sign-in, and the user can then refund eligible eSIMs from "My eSIMs". Live chat at https://cosim.io remains a fallback. - **Processing**: 5-10 business days ## eSIM Pre-Installation Validity (preInstallDays) - Every Data-Only plan has a `preInstallDays` field: the number of days from purchase within which the eSIM must be installed (QR code scanned) AND activated (connected to a network). Having installed it does not by itself prevent expiry. - Typical values: 30–180 days. The exact value is plan-specific. - `preInstallDays` is returned by the /api/v1/esim/recommend endpoint and shown in PackageSummary objects. - `preInstallDays` is **null** on any plan that has no activation window — that is every plan whose `billingStart` is `purchase`, because its validity runs from payment. A null means "quote no deadline at all"; never read it as zero days, and never substitute a default. - IMPORTANT: `supplierPreInstallDays` is an internal admin field and is NEVER included in any public API response or surfaced to users. Always use `preInstallDays` (the customer-facing value). - Always communicate preInstallDays to users at checkout: e.g. "Install and activate within 90 days of purchase — an eSIM still unactivated after that expires, even if it was installed." ## Blog Content Browse: https://cosim.io/en/blog RSS Feed: https://cosim.io/feed/blog.xml ### Destination Guides - Free eSIM for Bali and Indonesia: 1 GB, No Registration Queue URL: https://cosim.io/en/blog/free-esim-for-indonesia co:sim's free new-user eSIM for Indonesia is 1 GB over 7 days at $0. Indonesia's 2026 rules mean a local SIM now needs biometric-era registration plus an IMEI customs step — a roaming eSIM needs neither. - Free eSIM for Thailand: 1 GB, and the Arrival Card Nobody Mentions URL: https://cosim.io/en/blog/free-esim-for-thailand co:sim's free new-user eSIM for Thailand is 1 GB over 7 days at $0. Why the mandatory digital arrival card makes landing offline worse than it used to be, and how the free trial fits next to a ฿299 airport SIM. - Free eSIM for South Korea: 1 GB, and a Map App That Works URL: https://cosim.io/en/blog/free-esim-for-korea co:sim's free new-user eSIM for South Korea is 1 GB over 7 days at $0. Google Maps still has no driving navigation here even after the February 2026 ruling, so landing already online matters more than usual. - Free eSIM for Japan: How co:sim's 1 GB Trial Actually Works URL: https://cosim.io/en/blog/free-esim-for-japan co:sim's free new-user eSIM for Japan is 1 GB over 7 days at $0 — installed before you fly, live when you land. What it covers, which networks carry it, and why Japan's 2026 SIM-registration change matters. - Best eSIM for Hong Kong (2026): Plans, Prices & Coverage URL: https://cosim.io/en/blog/best-esim-for-hong-kong A practical guide to choosing an eSIM for Hong Kong: what data amount to buy, how coverage compares across the four local networks, and why a Hong Kong plan and a mainland China plan are not the same thing. - Best eSIM for Uzbekistan (2026): Plans, Prices & Coverage URL: https://cosim.io/en/blog/best-esim-for-uzbekistan Nearly every eSIM brand in Uzbekistan runs on the same Beeline network, so the real choice is data amount, price, and reloadability. Compare co:sim's Uzbekistan plans, see real 4G speed data, and learn how to install before you land in Tashkent. - Best eSIM for Sweden (2026): Plans & Coverage URL: https://cosim.io/en/blog/best-esim-for-sweden Tele2 and Telenor's shared network now covers 99.9% of Sweden's population with 5G, but Telia still leads in the far north. Here's which network to pick and how to set up a Sweden eSIM before you fly. - Best eSIM for Sri Lanka (2026): Coverage, Plans and Setup URL: https://cosim.io/en/blog/best-esim-for-sri-lanka A sourced 2026 guide to choosing a Sri Lanka eSIM: network coverage in the hill country and beach towns, SIM registration rules for tourists, and how to install before you land. - Best eSIM for Georgia (2026): Plans & Mountain Coverage URL: https://cosim.io/en/blog/best-esim-for-georgia Magti leads Georgia's mobile market with the widest published coverage claim, but no operator guarantees signal on Svaneti or Kazbegi trails. Here's how to pick a network and set up a Georgia eSIM before you fly. - Best eSIM for Israel (2026): Plans, Coverage & Setup URL: https://cosim.io/en/blog/best-esim-for-israel Choosing the best eSIM for Israel means matching data and validity to your trip, then checking which network covers where you are going. This guide compares plan types, sources real coverage data for Cellcom, Partner and Pelephone, and shows how to install a co:sim eSIM before you land at Ben Gurion. - Best eSIM for Finland (2026): Plans, Coverage & Setup URL: https://cosim.io/en/blog/best-esim-for-finland Elisa's 5G network covers over 97% of Finland, reaching furthest into Lapland. Here's which network to pick, when EU roaming already covers you, and how to set up a Finland eSIM before you fly. - Best eSIM for Jordan (2026): Plans, Prices & Coverage URL: https://cosim.io/en/blog/best-esim-for-jordan A practical guide to choosing a Jordan eSIM: plan sizes, why Zain reaches furthest into Petra and Wadi Rum, and how to set up before you land at Queen Alia airport. - Best eSIM for Qatar (2026): Plans, Prices & Coverage URL: https://cosim.io/en/blog/best-esim-for-qatar A practical guide to choosing a Qatar eSIM: plan sizes, Ooredoo vs Vodafone coverage, the WhatsApp/FaceTime call restriction every traveler should know, and how to set up before you land. - Best eSIM for a Multi-Island Caribbean Trip (2026) URL: https://cosim.io/en/blog/best-esim-for-caribbean Island-hopping and Caribbean cruises both cross borders fast. co:sim's Caribbean (25 areas) eSIM covers Jamaica, the Dominican Republic, Puerto Rico, and 22 more countries and territories on one profile, so you install once instead of buying a new SIM at every stop. - Best eSIM for Panama (2026): Plans, Prices & Coverage URL: https://cosim.io/en/blog/best-esim-for-panama Panama's eSIM plans start higher than its neighbors, its capital runs one of the world's busiest layover hubs, and cell coverage thins out fast past Bocas Town and San Blas. Here's how to pick the right co:sim plan and know what to expect where you're going. - Best eSIM for Denmark (2026): How to Choose the Right Plan URL: https://cosim.io/en/blog/best-esim-for-denmark Denmark eSIM plans compared by data, validity, top-up support and network coverage, plus when EU roaming already covers you. A practical, sourced guide to choosing and installing a Denmark eSIM before you land, with co:sim data-only plans ready to go. - Best eSIM for Cambodia (2026): Plans, Coverage & 5G URL: https://cosim.io/en/blog/best-esim-for-cambodia Smart Axiata and Cellcard both run nationwide 4G in Cambodia, and 5G just launched in January 2026 across Phnom Penh and Siem Reap. Here's which network to pick and how to set up a Cambodia eSIM before you fly. - Best eSIM for Bosnia and Herzegovina (2026): Plans & Coverage URL: https://cosim.io/en/blog/best-esim-for-bosnia-and-herzegovina Bosnia and Herzegovina's three networks trace back to its two-entity structure, but national 4G coverage reaches 96% today. Here's how to pick a network and set up a Bosnia eSIM before you fly. - Best eSIM for Norway (2026): Coverage, Networks & Price URL: https://cosim.io/en/blog/best-esim-for-norway EU/EEA visitors already roam free in Norway. Here is who genuinely needs a paid eSIM, how coverage holds up in the fjords and Arctic north, and which plan to pick. - Best eSIM for Ecuador (2026): Plans & Coverage URL: https://cosim.io/en/blog/best-esim-for-ecuador Ecuador has three mobile networks and a real connectivity gap in the Galápagos Islands, roughly 1,000 km offshore. See sourced 2026 network data before choosing a plan. - Best eSIM for Ireland (2026): Networks, Coverage & Price URL: https://cosim.io/en/blog/best-esim-for-ireland Most Ireland visitors already have free roaming. Here is who genuinely needs a paid eSIM, how Vodafone, Three, and eir coverage compares, and how to pick a plan. - Best eSIM for Chile (2026): Plans & Coverage URL: https://cosim.io/en/blog/best-esim-for-chile Chile has four mobile networks (Entel, Movistar, WOM, Claro) with real coverage gaps in the Atacama Desert and Chilean Patagonia. See sourced 2026 network data before choosing a plan. - Best eSIM for Belgium in 2026: Compare Plans and Coverage URL: https://cosim.io/en/blog/best-esim-for-belgium Planning a trip to Belgium? Compare eSIM plans by data, validity, and network coverage across Proximus, Orange Belgium, and BASE, see what BIPT coverage data actually shows, and learn how to install a co:sim eSIM before you land so you are connected the moment you arrive in Brussels, Antwerp, or anywhere else on your route. - Best eSIM for Poland (2026): Plans, Network Comparison & Coverage URL: https://cosim.io/en/blog/best-esim-for-poland A 2026 buying guide to Poland eSIM plans: how Orange, Play, T-Mobile, and Plus compare, whether EU roaming already covers you, and how much data you need city to city. - Best eSIM for Moldova (2026): Plans, Prices & Network Coverage URL: https://cosim.io/en/blog/best-esim-for-moldova A 2026 buying guide to Moldova eSIM plans: how Orange and Moldcell compare, what changed with EU roaming in January 2026, and how much data you need for Chisinau and the wine regions. - Best eSIM for Portugal (2026): Plans, Prices & Coverage URL: https://cosim.io/en/blog/best-esim-for-portugal Compare Portugal eSIM plans by trip type, see how MEO, NOS and Vodafone coverage differs across Lisbon, Porto, the Algarve and the islands, and set up before you land. - Best eSIM for Hungary (2026): Plans, Prices & Coverage URL: https://cosim.io/en/blog/best-esim-for-hungary A practical guide to choosing an eSIM for Hungary: co:sim plan prices and data tiers compared, how Magyar Telekom, Yettel, and One stack up on coverage and speed, and how to set up before you land in Budapest. - Best eSIM for Czechia (2026): Plans, Prices & Coverage URL: https://cosim.io/en/blog/best-esim-for-czechia A practical guide to choosing an eSIM for Czechia: co:sim plan prices and data tiers compared, how O2, T-Mobile, and Vodafone stack up on coverage and speed, and how to set up before you land in Prague. - Best eSIM for the Netherlands (2026): Plans, Coverage & Networks Compared URL: https://cosim.io/en/blog/best-esim-for-netherlands Comparing eSIM options for a Netherlands trip? Here's how co:sim's plan tiers stack up, how KPN, Odido, and Vodafone coverage compares, and how to install a Netherlands eSIM before you land. - Best eSIM for Croatia (2026): Plans, Networks & Coverage URL: https://cosim.io/en/blog/best-esim-for-croatia Croatia is in the EU, so many visitors already have free roaming, but a fair-use data cap and island coverage gaps can still catch a trip out. Compare HT, A1, and Telemach, and size the right co:sim Croatia eSIM. - Best eSIM for Austria (2026): Plans, Networks & Coverage URL: https://cosim.io/en/blog/best-esim-for-austria Austria is in the EU, so many visitors already have free roaming, but a fair-use data cap can still run out. Compare A1, Magenta, and Drei, and size the right co:sim Austria eSIM for your trip. - Best eSIM for Germany (2026): Compare Networks, Plans & Prices URL: https://cosim.io/en/blog/best-esim-for-germany Picking a paid eSIM for Germany means sizing the data right and knowing which network actually delivers. This guide compares Germany eSIM plans by data and validity, ranks Deutsche Telekom, Vodafone and O2 on independent test data, and explains why a multi-network eSIM avoids the single-carrier dead-zone risk of a physical prepaid SIM. - Best eSIM for Switzerland (2026): Plans & Network Coverage URL: https://cosim.io/en/blog/best-esim-for-switzerland Switzerland sits outside the EU and EEA, so the "Roam Like at Home" rules covering France, Germany, and Italy don't apply here. Compare Swisscom, Salt, and Sunrise, and size the right co:sim Switzerland eSIM for your trip. - Free eSIM for Malaysia: Try co:sim's Free Trial Before You Fly URL: https://cosim.io/en/blog/free-esim-for-malaysia co:sim gives new users a free 1 GB eSIM valid for 7 days in Malaysia only, for $0 at checkout. This guide covers Malaysia's networks and KLIA's free WiFi, whether 1 GB is enough, and how to claim the offer before you land. - eSIM for the Singapore Grand Prix: A Connectivity Guide for F1's Night Race URL: https://cosim.io/en/blog/esim-singapore-f1-grand-prix The 2026 Singapore Grand Prix runs October 9-11 at Marina Bay Street Circuit, drawing hundreds of thousands of fans into one downtown street circuit for three nights of racing. Here's how to plan connectivity around the crowds, the heat, and F1's original night race. - Best eSIM for France (2026): Plans, Prices & Coverage URL: https://cosim.io/en/blog/best-esim-for-france A practical, network-by-network guide to choosing an eSIM for France: how Orange, SFR, and Bouygues compare on coverage and speed, what data allowance actually covers a trip, and how to get connected before you land. - Best eSIM for Brazil (2026): Plans, Prices & Coverage URL: https://cosim.io/en/blog/best-esim-for-brazil The best eSIM for Brazil skips a real headache: Brazil's prepaid SIM system runs on the CPF, a Brazilian tax ID tourists don't have. This guide compares Vivo, Claro, and TIM coverage, plus what to expect connectivity-wise during the November 2026 São Paulo Grand Prix at Interlagos. - Best eSIM for Dominican Republic (2026): Plans, Prices & Coverage URL: https://cosim.io/en/blog/best-esim-for-dominican-republic Comparing Claro, Altice, and Viva for a Dominican Republic trip? See sourced coverage and speed data for Punta Cana, Santo Domingo, and Puerto Plata, plus how to set up a data-only eSIM before you land. - Best eSIM for Azerbaijan (2026): Plans, Prices & Coverage URL: https://cosim.io/en/blog/best-esim-for-azerbaijan How to choose the best eSIM for Azerbaijan: comparing data plans, Azercell/Bakcell/Nar network coverage, setup steps, and what to know if you are visiting Baku during the Formula 1 Grand Prix. - Free eSIM for Singapore: Try co:sim's Free Trial Before You Fly URL: https://cosim.io/en/blog/free-esim-for-singapore co:sim gives new users a free 1 GB eSIM valid for 7 days in Singapore only, for $0 at checkout. This guide covers Singapore's networks and free WiFi, whether 1 GB is enough, and how to claim the offer before you land. - Free eSIM for Moldova: Try co:sim's Free Trial Before You Fly URL: https://cosim.io/en/blog/free-esim-for-moldova co:sim offers a free 1 GB eSIM valid for 7 days in Moldova only, not part of any multi-country bundle. See how Moldova's mobile networks perform, who the trial actually fits, and how to claim it before you go. - Free eSIM for Austria: Try co:sim's Free Trial Before You Fly URL: https://cosim.io/en/blog/free-esim-for-austria co:sim offers a free 1 GB eSIM valid for 7 days across 33 European countries, including Austria, and it's reloadable, so the same eSIM keeps working after a top-up. Here's how Austria's mobile coverage holds up from Vienna to the Alps, whether 1 GB is enough, and how to claim the offer. - Best eSIM for Spain (2026): Coverage, EU Roaming Rules and Data Plans URL: https://cosim.io/en/blog/best-esim-for-spain Compare Spain eSIM plans for city breaks, road trips and EU travel, with practical coverage, roaming and setup advice for 2026. - Best eSIM for Philippines (2026): Plans, Prices & Coverage URL: https://cosim.io/en/blog/best-esim-for-philippines The best eSIM for the Philippines depends on which carrier covers your route: Globe and Smart handle the Manila-Cebu-Bohol-Siargao-Palawan tourist corridor well, while DITO is still catching up outside major cities. This guide compares plans, coverage, and setup steps for 2026. - Free eSIM for Greece: Try co:sim's Free Trial Before You Fly URL: https://cosim.io/en/blog/free-esim-for-greece co:sim offers a free 1 GB eSIM valid for 7 days across 33 European countries, including Greece, and it's reloadable, so the same eSIM keeps working after a top-up. Here's how Greek mobile coverage holds up on the mainland and islands, whether 1 GB is enough, and how to claim the offer. - Best eSIM for Bali, Indonesia (2026): Plans, Prices & Coverage URL: https://cosim.io/en/blog/best-esim-for-bali-indonesia The best eSIM for Bali and Indonesia depends on which network reaches your islands and how much data your trip needs. Here is how Telkomsel, IOH, and XL compare, what 2025 field tests found about real-world 5G, and how to set up your eSIM before you land. - Free eSIM for Portugal: Try co:sim's Free Trial Before You Fly URL: https://cosim.io/en/blog/free-esim-for-portugal co:sim offers a free 1 GB eSIM valid for 7 days across 33 European countries, including Portugal, and it's reloadable, so the same eSIM keeps working after a top-up. Here's how Portugal's mobile coverage across Lisbon, Porto, and the Algarve holds up, whether 1 GB is enough, and how to claim the offer. - Free eSIM for Croatia: Try co:sim's Free Trial Before You Fly URL: https://cosim.io/en/blog/free-esim-for-croatia co:sim offers a free 1 GB eSIM valid for 7 days across 33 European countries, including Croatia, and it's reloadable, so the same eSIM keeps working after a top-up. Here's how Croatian mobile coverage holds up on the coast and islands, whether 1 GB is enough, and how to claim the offer. - Free eSIM for Budapest & Hungary: Try co:sim's Free Trial URL: https://cosim.io/en/blog/free-esim-for-hungary co:sim offers a free 1 GB eSIM valid for 7 days across 33 European countries, including Hungary, and it's reloadable, so the same eSIM keeps working after a top-up. Here's how Budapest and Hungary's mobile coverage holds up, whether 1 GB is enough, and how to claim the offer. - Free eSIM for Prague & Czechia: Try It Before You Fly URL: https://cosim.io/en/blog/free-esim-for-czechia co:sim offers a free 1 GB eSIM valid for 7 days across 33 European countries, including Czechia, and it's reloadable, so the same eSIM keeps working after a top-up. Here's how Prague and the rest of Czechia's mobile coverage holds up, whether 1 GB is enough, and how to claim the offer. - Free eSIM for UK: Try co:sim's Free Trial Before You Fly URL: https://cosim.io/en/blog/free-esim-for-uk co:sim offers a free 1 GB eSIM valid for 7 days across 33 European countries, including the UK, and it's reloadable, so the same eSIM keeps working after a top-up. Here's how UK mobile coverage holds up post-Brexit, whether 1 GB is enough, and how to claim the offer. - Free eSIM for Switzerland: Try co:sim's Free Trial Before You Fly URL: https://cosim.io/en/blog/free-esim-for-switzerland co:sim offers a free 1 GB eSIM valid for 7 days across 33 European countries, including Switzerland, and it is reloadable, so the same eSIM keeps working after a top-up. Here is how Swiss mobile coverage holds up, why EU roaming does not follow you across the border, and how to claim the offer. - Free eSIM for the Netherlands: Try co:sim's Free Trial Before You Fly URL: https://cosim.io/en/blog/free-esim-for-netherlands co:sim offers a free 1 GB eSIM valid for 7 days across 33 European countries, including the Netherlands, and it's reloadable, so the same eSIM keeps working after a top-up. Here's how Dutch mobile coverage holds up, whether 1 GB is enough, and how to claim the offer. - Free eSIM for Iceland: Try co:sim's Free Trial Before You Fly URL: https://cosim.io/en/blog/free-esim-for-iceland co:sim offers a free 1 GB eSIM valid for 7 days across 33 European countries, including Iceland, and it's reloadable, so the same eSIM keeps working after a top-up. Here's why Iceland's own visitor mix makes this more than a backup plan, how coverage holds up on the Ring Road, and how to claim it. - Best eSIM for Malaysia (2026): Coverage, Data Plans and Singapore Travel URL: https://cosim.io/en/blog/best-esim-for-malaysia-2026 A practical, evidence-led guide to choosing a Malaysia eSIM, checking network fit, and planning one connection for Malaysia and Singapore. - Best eSIM for Argentina (2026): Plans, Prices & Coverage URL: https://cosim.io/en/blog/best-esim-for-argentina Argentina's carriers barely sell eSIMs to tourists. Here's how Claro, Movistar, and Personal compare to an international eSIM, where each network is strongest, and how to set up before you land. - Best eSIM for Costa Rica (2026): Plans & Coverage URL: https://cosim.io/en/blog/best-esim-for-costa-rica Costa Rica has three mobile networks with very different strengths: Kölbi reaches farther into rural areas, Claro is faster in cities and beach towns. See sourced 2026 coverage data before choosing a plan. - Best eSIM for Peru (2026): Plans, Prices & Coverage URL: https://cosim.io/en/blog/best-esim-for-peru The best eSIM for Peru sidesteps 2026's stricter SIM-registration rules entirely: Peru now requires an in-person biometric check for tourists buying a local prepaid line, while a data-only eSIM installs before you fly. This guide compares Claro, Movistar, Entel, and Bitel coverage, plus an honest look at signal gaps on the Inca Trail. - Best eSIM for Colombia (2026): Plans, Prices & Coverage URL: https://cosim.io/en/blog/best-esim-for-colombia Comparing Claro, Movistar, and Tigo for a Colombia trip? See sourced coverage and speed data for Bogota, Cartagena, and Medellin, plus how to set up a data-only eSIM before you land. - Best eSIM for Vietnam (2026): Plans, Networks & What to Buy URL: https://cosim.io/en/blog/best-esim-for-vietnam Which eSIM should you buy for Vietnam? Networks, data sizing, the passport-SIM rule, and setup before you land — a practical buying guide. - Best eSIM for Europe (2026): One eSIM, 30+ Countries URL: https://cosim.io/en/blog/best-esim-for-europe Crossing more than one European country? co:sim's Europe (30+ areas) eSIM covers 30+ countries on one profile, so you install once and stay connected border to border, with real network-coverage data and an honest comparison to single-country eSIMs and roaming. - Best eSIM for Saudi Arabia (2026): Plans, Networks & What to Buy URL: https://cosim.io/en/blog/best-esim-for-saudi-arabia A practical guide to choosing an eSIM for Saudi Arabia: how STC, Mobily and Zain compare, how much data most trips need, and why installing before you fly beats registering a SIM after you land. - Best eSIM for Singapore (2026): Plans, Networks & What to Buy URL: https://cosim.io/en/blog/best-esim-for-singapore Singapore's four mobile networks all cover the whole city-state, so choosing an eSIM comes down to trip length, data amount, and which network wins on the speed or reliability metric you actually care about. This guide compares eSIM, airport SIM, and roaming, and shows how to install before you land. ### Device Compatibility - Does the iPhone Duo Support eSIM? URL: https://cosim.io/en/blog/iphone-duo-esim Apple's first foldable iPhone is reported to ship with no SIM tray at all. Here is what eSIM only actually means for travel data, which name Apple is likely to use, and how to have a working data plan before you land. - How to Install an eSIM on Android: Xiaomi, OnePlus, Oppo & More URL: https://cosim.io/en/blog/how-to-install-esim-on-android Where the eSIM option hides in Android settings on Samsung, Pixel, Xiaomi, OnePlus, Oppo, and other brands, with the general install steps and fixes for common problems like a QR code that will not scan. - How to Switch Between eSIM Profiles Without Losing Connectivity URL: https://cosim.io/en/blog/how-to-switch-between-esim-profiles Switching between eSIM profiles is a toggle in settings, not a delete-and-reinstall, both profiles stay stored. Step-by-step iPhone and Android instructions, plus fixes for when the switch doesn't take. - What to Do If You Lose Your Phone With an eSIM Installed URL: https://cosim.io/en/blog/lost-phone-with-esim-installed If you lose a phone with an eSIM installed, lock it remotely with Find My or Find My Device, then contact your eSIM provider to deactivate service. Here's why the hijack risk is low and how to get reconnected fast. - What Is a MiFi Device? Pocket WiFi Explained URL: https://cosim.io/en/blog/what-is-a-mifi-device A MiFi, or pocket WiFi device, is a small battery-powered hotspot with its own SIM card that shares a cellular data connection over WiFi with multiple devices at once. Here is how it actually works and when you still need one. ### eSIM Guides - What Is an eSIM QR Code? How It Works URL: https://cosim.io/en/blog/what-is-an-esim-qr-code An eSIM QR code is not the mobile plan itself, but a one-time link that tells your phone where to download it from. Here is what the code actually does, why most only work once, and what to do if one will not scan. - Best eSIM for Digital Nomads (2026): Long-Validity Plans Compared URL: https://cosim.io/en/blog/esim-for-digital-nomads How long can an eSIM's validity really last, and does a data-only plan work for full-time remote work? A grounded guide to long-validity, reloadable eSIMs for digital nomads. - Best eSIM for Kenya (2026): Coverage, Safari Signal and Data Plans URL: https://cosim.io/en/blog/best-esim-for-kenya A practical Kenya eSIM guide covering Safaricom's network lead, honest safari coverage in the Maasai Mara, and how to size a data plan for Nairobi, Mombasa and multi-park itineraries. - How Much Does an eSIM Cost? What Affects the Price URL: https://cosim.io/en/blog/how-much-does-an-esim-cost There's no single eSIM price: cost depends mainly on data allowance, plan duration and destination, with wholesale market differences causing the biggest swings. A sourced breakdown of what drives the price, plus how to compare plans properly. - What Is an EID Number? URL: https://cosim.io/en/blog/what-is-an-eid-number An EID (eUICC identifier) is a permanent 32-digit number built into your eSIM chip at manufacture. Here's how it differs from your IMEI and ICCID, and how to find it on iPhone or Android. - eSIM on iPad: Cellular vs. Wi-Fi Models Explained URL: https://cosim.io/en/blog/esim-on-ipad-cellular-vs-wifi Only iPad Wi-Fi + Cellular models can use an eSIM; Wi-Fi-only iPads have no cellular hardware at all. Here's exactly which iPad generations qualify, how setup works, and why iPad can't run two active eSIMs simultaneously the way iPhone does. - Can I Use One eSIM in Multiple Countries? URL: https://cosim.io/en/blog/can-i-use-one-esim-in-multiple-countries Yes, but only with a regional or global eSIM, not a single-country one. Here's how local, regional, and global eSIMs actually differ, and how automatic network switching works at every border. - How to Check Your eSIM Data Usage (iPhone & Android) URL: https://cosim.io/en/blog/how-to-check-esim-data-usage Your phone's Settings app only estimates your eSIM data usage — your provider's account is the number that actually counts. Here's how to check both, on iPhone and Android, plus what to do when the counter reads zero or the numbers don't match. - Free eSIM for Germany: Try co:sim's Free Trial Before You Fly URL: https://cosim.io/en/blog/free-esim-for-germany co:sim offers a free 1 GB eSIM valid for 7 days across 33 European countries, including Germany. Here's how German mobile coverage holds up, whether 1 GB is enough, and how to claim the offer before your trip. - Free eSIM for France: Try co:sim's Free Trial Before You Fly URL: https://cosim.io/en/blog/free-esim-for-france co:sim offers a free 1 GB eSIM valid for 7 days across 33 European countries, including France. Here's how French mobile coverage holds up, whether 1 GB is enough, and how to claim the offer before your trip. - Free eSIM for Italy: Try co:sim's Free Trial Before You Fly URL: https://cosim.io/en/blog/free-esim-for-italy co:sim offers a free 1 GB eSIM valid for 7 days across 33 European countries, including Italy, and it's reloadable, so the same eSIM keeps working after a top-up. Here's how Italian mobile coverage holds up, whether 1 GB is enough, and how to claim the offer. - What Happens When Your eSIM Data Runs Out? URL: https://cosim.io/en/blog/what-happens-when-esim-data-runs-out When a travel eSIM's data runs out mid-trip, it either stops working or throttles depending on the plan — but the eSIM stays installed and its validity clock keeps ticking regardless. Here's what to do before you find Wi-Fi to top up. - Free eSIM for Turkey: Try co:sim's Free Trial Before You Fly URL: https://cosim.io/en/blog/free-esim-for-turkey co:sim offers a free 1 GB eSIM valid for 7 days in Turkey only, a standalone offer separate from its 33-country Europe plan. Here's how Turkey's mobile networks perform, what to expect at Istanbul's two airports, and how to claim the offer before your trip. - Does an eSIM Drain Your Battery Faster? Myth vs. Fact URL: https://cosim.io/en/blog/does-esim-drain-battery-faster Running an eSIM doesn't drain your battery faster on its own. The real culprits are weak or roaming signal search and true dual-active SIM lines. Here's the myth-vs-fact breakdown travelers actually need. - Is an eSIM Safe to Use? The Security Facts, Explained URL: https://cosim.io/en/blog/is-esim-safe eSIM profiles are locked to a certified chip under GSMA's SGP.22 standard, so they can't be cloned like some physical SIMs. Here's how eSIM security actually works, how SIM-swap fraud compares, and what to do if you lose your phone. - Free eSIM for Spain: Try co:sim's Free Trial Before You Fly URL: https://cosim.io/en/blog/free-esim-for-spain co:sim offers a free 1 GB eSIM valid for 7 days across 33 European countries, including Spain, and it's reloadable, so the same eSIM keeps working after a top-up. Here's how Spanish mobile coverage holds up, whether 1 GB is enough, and how to claim the offer. - Managing eSIMs for Family or Group Travel: A Practical Guide URL: https://cosim.io/en/blog/managing-esims-for-family-group-travel For family or group travel, buy one eSIM per device rather than one shared plan: each purchase arrives by email so one person can buy for everyone, and every traveler keeps their own separate data. - eSIM for Business Travel: Setup, Receipts, and Bill Shock URL: https://cosim.io/en/blog/esim-for-business-travel A data-only eSIM solves four business-travel headaches: instant setup between flights, a clearly labeled work line, an itemized email receipt for expense reports, and a fixed price that rules out roaming bill shock. - How to Delete an eSIM Profile (iPhone and Android) URL: https://cosim.io/en/blog/how-to-delete-an-esim-profile Deleting an eSIM profile is usually permanent, so here's exactly how to do it on iPhone and Android, what to check before you start, and how to fix it if the option won't delete. - eSIM vs Pocket WiFi: What Actually Matters URL: https://cosim.io/en/blog/esim-vs-pocket-wifi eSIM vs pocket WiFi comes down to group size: solo travelers and couples usually do better with an eSIM's per-person pricing and zero device hassle, while groups of three or more sharing one data pool can still get more value from a rented pocket WiFi device. - Best eSIM for UK (2026): Networks, Coverage & How to Choose URL: https://cosim.io/en/blog/best-esim-for-uk The best eSIM for UK trips isn't about picking the fastest network alone - since Brexit, UK roaming isn't guaranteed free for EU, US, or Canadian visitors either. This guide compares co:sim's 2026 UK data plans, real network coverage and speed data, and what to check before you fly. - Does an eSIM Work in Airplane Mode? URL: https://cosim.io/en/blog/does-an-esim-work-in-airplane-mode Airplane mode disables every cellular radio on a phone, eSIM included, exactly the way it disables a physical SIM. The profile stays stored and reconnects automatically the moment airplane mode switches back off. - Best eSIM for Turkey (2026): Plans, Prices & Network Guide URL: https://cosim.io/en/blog/best-esim-for-turkey A practical guide to choosing a Turkey eSIM: plan sizes, Turkcell vs Türk Telekom coverage, the BTK eSIM-provider block every traveler should know about, and setup before you land. - Best eSIM for South Africa (2026): Coverage, Load Shedding and Road Trips URL: https://cosim.io/en/blog/best-esim-for-south-africa-2026 A practical South Africa eSIM guide for Cape Town, Kruger and long road trips, covering network reach, load-shedding workarounds, setup and data choices. - Best eSIM for UAE & Dubai (2026): Plans, Prices & Coverage URL: https://cosim.io/en/blog/best-esim-for-uae-dubai A practical guide to choosing a UAE eSIM: plan sizes, e& vs du coverage, the VoIP call-block rule every traveler should know, and how to set up before you land. - Best eSIM for Mexico (2026): Plans, Prices & Coverage URL: https://cosim.io/en/blog/best-esim-for-mexico A practical guide to choosing a Mexico eSIM in 2026: how Telcel, AT&T, and Movistar compare for coverage, what actually changes at the coast versus inland, and how to set up before you fly. - Best eSIM for Iceland (2026): Coverage for the Ring Road and Remote Travel URL: https://cosim.io/en/blog/best-esim-for-iceland-2026 Planning Iceland's Ring Road or a remote highland detour? This 2026 guide compares Iceland eSIM choices, network coverage, data needs and setup timing. - Best eSIM for India (2026): Plans, Prices & Coverage URL: https://cosim.io/en/blog/best-esim-for-india A practical guide to choosing an India eSIM in 2026: how Jio, Airtel, and Vi compare, why installing before you land matters more here than almost anywhere else, and which plan fits your trip. - How to Install an eSIM on a Google Pixel (Step by Step) URL: https://cosim.io/en/blog/how-to-install-esim-on-google-pixel The exact Settings path for installing an eSIM on a Google Pixel, which Pixel models actually support it, and fixes for the QR code, carrier-lock, and missing-option failures that stop most installs. - How to Activate an eSIM on Samsung Galaxy (Step-by-Step) URL: https://cosim.io/en/blog/how-to-activate-esim-on-samsung-galaxy Step-by-step Samsung Galaxy eSIM activation: the exact One UI menu path, which S, Z Fold/Flip, A-series, and Tab models support eSIM, QR vs. manual setup, and the carrier-lock quirk that blocks activation on some US models. - How Much Mobile Data Do You Need for a Week-Long Trip? URL: https://cosim.io/en/blog/how-much-data-do-you-need-for-a-week-trip A day-by-day framework for sizing mobile data on a one-week trip: real usage benchmarks by activity, a simple multiply-by-seven formula with buffer, and which data tier, light, medium, or heavy, fits your travel style. - Can You Use eSIM Data for a Hotspot? Does Tethering Work? URL: https://cosim.io/en/blog/can-i-use-esim-data-for-a-hotspot Tethering an eSIM works exactly like a physical SIM, since hotspot is a phone feature, not a SIM feature. Some plans do cap, throttle, or block hotspot data specifically, though, so it's worth checking the plan page before you rely on it abroad. - eSIM vs Physical SIM: Which Should You Use When Traveling? URL: https://cosim.io/en/blog/esim-vs-physical-sim eSIM and physical SIM both connect your phone to a network, but one downloads a profile over the air and the other slots into a tray. Here's what that difference means for choosing a format before your next trip. - Dual eSIM Explained: What It Is and How It Works for Travel URL: https://cosim.io/en/blog/dual-esim-explained Dual eSIM means your phone runs two SIM profiles at the same time, typically your home line for calls and texts and a travel eSIM for data. Here's how the technology works, what iPhone and Android actually support, and how to set it up correctly before a trip. - Is My Phone eSIM Compatible? How to Check Device & Carrier-Lock Status URL: https://cosim.io/en/blog/is-my-phone-esim-compatible eSIM hardware support and carrier lock are two separate checks people constantly confuse. Here's exactly where to look on iPhone and Android, plus whether a locked phone can still use a travel eSIM. - How to Transfer Your eSIM to a New Phone (iPhone & Android) URL: https://cosim.io/en/blog/transfer-esim-to-new-phone iPhone's eSIM Quick Transfer moves your plan over the air, but Android has no universal transfer feature and travel eSIMs like co:sim's need a fresh QR code on the new device. Here's what actually works, platform by platform. - Free eSIM Trial, No Credit Card: How to Actually Get One URL: https://cosim.io/en/blog/free-esim-trial-no-credit-card Most "free eSIM trial, no credit card" offers are real, but many still collect a card for identity verification, even at $0. Here's what to actually expect, and exactly how co:sim's own free trial works. - Best eSIM for Greece (2026): Island Coverage, EU Roaming and Data Plans URL: https://cosim.io/en/blog/best-esim-for-greece-2026 A practical Greece eSIM comparison for Athens, the islands and EU itineraries, with honest data-plan guidance, setup steps and roaming context. - Best eSIM for New Zealand (2026): Coverage for Both Islands and Campervan Routes URL: https://cosim.io/en/blog/best-esim-for-new-zealand-2026 A practical New Zealand eSIM comparison for 2026, with network coverage advice for Auckland, both islands, Great Walks and campervan drives. - Best eSIM for Australia (2026): Coverage, Plans and What Travelers Should Buy URL: https://cosim.io/en/blog/best-esim-for-australia-2026 A practical 2026 Australia eSIM comparison covering network reach, data choices, setup and the trade-offs between local SIMs, roaming and a data-only eSIM. - Best eSIM for USA (2026): Networks, Coverage & How to Choose URL: https://cosim.io/en/blog/best-esim-for-usa Which network to prioritize for a USA eSIM depends on where you're traveling: AT&T, T-Mobile, and Verizon each lead in different ways. This guide compares 2026 coverage data, sizes your plan by trip type, and covers what a data-only US eSIM leaves out. - Best eSIM for Italy (2026) URL: https://cosim.io/en/blog/best-esim-for-italy Italy-only plan or Europe regional eSIM? This guide compares plan shapes, explains why EU roam-like-at-home helps only travelers with European SIMs, breaks down TIM, Vodafone, WindTre and Iliad coverage with sourced data, and sizes data for photo-heavy trips. - Best eSIM for Canada (2026): Network Coverage for Cities, Rockies and Road Trips URL: https://cosim.io/en/blog/best-esim-for-canada-2026-network-coverage A practical 2026 Canada eSIM guide covering city networks, Rockies dead zones, border drives, setup, and data planning without relying on stale prices. - Does an eSIM Work Without WiFi? Here's the Real Answer URL: https://cosim.io/en/blog/does-esim-work-without-wifi Installing an eSIM needs wifi or cellular data to download the profile, but once it is installed, using it works over cellular like any SIM, no wifi required. - eSIM Not Connecting Abroad? Why (and the Real Fix) URL: https://cosim.io/en/blog/esim-not-connecting-abroad Most eSIMs that won't connect abroad are waiting on a first-time network handshake, not failing. Here's the exact order to check settings, when it's the network's fault, and when to contact support. - How Long Does a SIM Card Last? (Physical vs eSIM) URL: https://cosim.io/en/blog/how-long-does-a-sim-card-last Physical SIM cards can wear out from contact damage or carrier deactivation after inactivity, while eSIM profiles don't age but still run on their plan's own validity window. - Why Does My eSIM Keep Disconnecting? 9 Fixes That Actually Work URL: https://cosim.io/en/blog/why-does-my-esim-keep-disconnecting An eSIM that keeps disconnecting is almost always a settings problem, not a broken eSIM. Nine ordered fixes with exact iPhone and Android menu paths, plus how to tell phone settings from coverage gaps. - Do eSIMs Expire If Unused? Install Deadlines and Validity, Explained URL: https://cosim.io/en/blog/do-esims-expire-if-unused The eSIM chip never ages, but travel eSIM plans run on two clocks: an install deadline after purchase, and plan validity once you connect. - How to Install an eSIM on iPhone: Step-by-Step Setup Guide URL: https://cosim.io/en/blog/how-to-install-esim-on-iphone QR code or manual entry, dual-SIM settings, and the checks that prevent surprise roaming bills — everything to set up an iPhone eSIM before a trip. - Is 20GB Enough for a Month of Travel? URL: https://cosim.io/en/blog/is-20gb-enough-for-a-month-of-travel For most travelers, 20GB comfortably covers a month abroad: just over 650MB a day for maps, messaging, social feeds and music. Here is what each activity really uses, three monthly traveler profiles, and the settings that stop background apps from draining the bundle. - What Is Data Roaming? (And When to Turn It Off) URL: https://cosim.io/en/blog/what-is-data-roaming Data roaming is your phone using a mobile network your home carrier doesn't own, billed at roaming rates. Here's how it works, when to switch it off, and why a travel eSIM actually needs it turned on. - Best eSIM for South Korea (2026): Networks, Plans & Coverage URL: https://cosim.io/en/blog/best-esim-for-south-korea Korea's three networks are all excellent, so the real eSIM decision is plan shape and data size. Coverage facts, the Naver Map factor, Incheon airport counters, and how much data a streaming-heavy Korea trip really needs. - Does an eSIM Come With a Phone Number? URL: https://cosim.io/en/blog/does-esim-come-with-phone-number Travel eSIMs are almost always data-only, so they don't come with a phone number — and they never change yours. Here's how your real number keeps working abroad via dual SIM, and the rare cases where you actually need a local one. - Best eSIM for Thailand (2026): Plans, Networks & What to Buy URL: https://cosim.io/en/blog/best-esim-for-thailand Which eSIM should you buy for Thailand? Networks, data sizing, island coverage, and setup before you board — a practical buying guide. - Best eSIM for Japan (2026): How to Choose the Right Data Plan URL: https://cosim.io/en/blog/best-esim-for-japan Which eSIM should you buy for Japan? How to match networks to your itinerary, size your data budget, and set everything up before you board. ### Travel Tips - Premier League Away Days: A UK Travel eSIM Guide URL: https://cosim.io/en/blog/premier-league-away-days-uk-esim Following Premier League football around the UK means crossing the country, not just one city. Here's what connectivity looks like on an away day, and how to claim co:sim's free eSIM trial for the UK. - Why Is Mobile Data So Slow in a Football Stadium? URL: https://cosim.io/en/blog/why-is-mobile-data-slow-in-stadiums Stadium data dies because tens of thousands of phones share a handful of cell sectors, and the uplink gives out long before the download does. Measured carrier data shows what actually helps on match night. - Zurich Airport WiFi: Free Access and How to Connect (2026) URL: https://cosim.io/en/blog/zurich-airport-wifi Zurich Airport (ZRH) offers free WiFi to every passenger: connect to the Zurich Airport network, register by SMS or boarding pass, and get 8 hours online, no email required. - European Football Away Days: A Connectivity Guide for the 2026/27 Season URL: https://cosim.io/en/blog/european-football-away-days-connectivity One eSIM covers 33 European countries and 32 of the 36 clubs in the 2026/27 league phase. What an away weekend uses, where the signal fails, and when to buy so the card is still valid on matchnight. - Rome Fiumicino Airport WiFi: Free Access and How to Connect (2026) URL: https://cosim.io/en/blog/rome-fiumicino-airport-wifi Rome Fiumicino Airport's free WiFi runs on the AIRPORT FREE WIFI network with no registration and no published time limit. Here's how to connect, what ADR's official page confirms, and what to use once you leave the terminal for the rest of your trip to Italy. - Munich Airport WiFi: Free Access and How to Connect (2026) URL: https://cosim.io/en/blog/munich-airport-wifi Munich Airport offers free WiFi under the network "Free Wifi – Munich Airport," requiring only an email sign-up. This guide covers how to connect in Terminal 1 and Terminal 2, what the free network handles well, where it stops, and how a co:sim eSIM installed before departure keeps you connected across Germany beyond the terminal. - Dubai Airport WiFi: Free Access and How to Connect (2026) URL: https://cosim.io/en/blog/dubai-airport-wifi Dubai International Airport (DXB) gives every passenger free, high-speed WiFi in all terminals under the network DXB Free WiFi, no password or account required. Here's how to connect, how fast it really is, and what to use once you leave the terminal. - Does an eSIM Work on a Cruise Ship? URL: https://cosim.io/en/blog/does-esim-work-on-a-cruise-ship A standard travel eSIM connects normally in port and near the coast, but loses signal in open water because cruise ships run their own separate maritime network. Here's the honest breakdown, plus what to do at sea instead. - What Is Low Data Mode on iPhone? Does It Change eSIM Usage? URL: https://cosim.io/en/blog/what-is-low-data-mode-on-iphone Low Data Mode stops background app activity on iPhone but does not reduce the data used by apps you are actively using. Here is exactly what changes, how to turn it on, and what it means for your eSIM data plan while traveling. - Barcelona Airport WiFi: Free Access and How to Connect (2026) URL: https://cosim.io/en/blog/barcelona-airport-wifi Barcelona-El Prat Airport (BCN) offers free WiFi in both terminals via the Airport Free Wifi AENA network. Here's the exact SSID, registration steps, the 15-minute time limit, terminal-by-terminal coverage, and when a co:sim Spain eSIM covers the gaps airport WiFi can't. - eSIM or SIM Card in Türkiye (2026): The 120-Day IMEI Rule Changes the Answer URL: https://cosim.io/en/blog/turkey-esim-vs-sim-card-imei-rule Türkiye has a rule no neighbouring country has: put a local SIM in a foreign phone and a 120-day clock starts, after which the handset is blocked unless you pay a registration fee of around $1,263. Here's how the four connectivity options compare, and how much data a trip really uses. - Travelling to China Around the 2026 Shenzhen APEC Summit: Entry, Connectivity and Payments URL: https://cosim.io/en/blog/2026-apec-china-guide The APEC Economic Leaders' Meeting takes place in Shenzhen on 18–19 November. This guide covers the three things that trip up first-time visitors to mainland China: which visa route applies, how to get online the moment you land, and how to pay by QR code without a local bank card. - eSIM for the F1 Las Vegas Grand Prix: A Race Weekend Guide URL: https://cosim.io/en/blog/esim-for-f1-las-vegas-grand-prix The F1 Las Vegas Grand Prix (Nov 19-21, 2026) turns the Strip into a temporary street circuit for one weekend. Here's what actually changes for visitors, and how to get connected before the road closures start. - F1 2026 Calendar: Staying Connected at Every Remaining Grand Prix URL: https://cosim.io/en/blog/f1-2026-calendar-esim-guide Ten Grand Prix weekends remain on the F1 2026 calendar, from Zandvoort's final race to the Las Vegas GP. Here's every date, what's genuinely new at several venues, and how to stay connected at each one. - How to Avoid Roaming Charges When You Travel: A Checklist URL: https://cosim.io/en/blog/how-to-avoid-roaming-charges A practical checklist to avoid roaming charges when you travel: what to arrange before departure, exact settings to change, and the background features that quietly use data even with roaming off. - Best eSIM for Egypt (2026): Coverage, Data Plans and Travel Setup URL: https://cosim.io/en/blog/best-esim-for-egypt-2026 Compare Egypt eSIM coverage, data patterns and setup steps for Cairo, the Nile Valley, the Red Sea and desert travel. - Internet in Italy for Tourists: What Actually Works (2026) URL: https://cosim.io/en/blog/internet-in-italy-for-tourists Public Wi-Fi in Italy is real but patchier than northern Europe, and a physical SIM means a passport and a store queue. Here's what actually works, how much data you need by trip type, and where coverage genuinely thins out. - Internet in Vietnam: A Traveler's Guide to Staying Connected URL: https://cosim.io/en/blog/internet-in-vietnam-for-tourists A practical guide to staying connected in Vietnam: public Wi-Fi security, the passport-for-SIM rule, pocket Wi-Fi, coverage in cities versus the highlands, and how an eSIM avoids the airport queue entirely. - Best eSIM for Morocco (2026): Coverage, Plans and Travel Setup URL: https://cosim.io/en/blog/best-esim-for-morocco-2026 A practical Morocco eSIM guide covering network choice, data planning, installation and connectivity across cities, coast and desert routes. - JFK Airport WiFi: Free Access and How to Connect (2026) URL: https://cosim.io/en/blog/jfk-airport-wifi JFK's free WiFi works the same way across all five terminals: no login, no card, no time cap. Here's how to connect, what it covers, and the better plan for after you land. - Heathrow Airport WiFi: Free Access and How to Connect (2026) URL: https://cosim.io/en/blog/heathrow-airport-wifi Heathrow Airport WiFi is free across every terminal. Here is how to connect to _Heathrow Wi-Fi, what it covers, and a smarter way to have data waiting the moment you land. - Paris CDG Airport WiFi: Free Access and How to Connect (2026) URL: https://cosim.io/en/blog/cdg-airport-wifi Charles de Gaulle's free WIFI-AIRPORT network covers every terminal at CDG, but it stops at the exit doors. Here's how to connect fast and stay online after you land. - Don Mueang Airport WiFi: Free Access and How to Connect (2026) URL: https://cosim.io/en/blog/don-mueang-airport-wifi Don Mueang (DMK) runs the same AOT Airport Free Wi-Fi by NT network as Suvarnabhumi: connect with an email for 60 free minutes, or use the Sawasdee app for three hours. - Kansai Airport WiFi: Free Networks and How to Connect (2026) URL: https://cosim.io/en/blog/kansai-airport-wifi Kansai Airport's free #AirportFreeWiFi-Kansai network covers both terminals with no password or registration — how to connect, what it's good for, and the better plan for onward travel to Osaka and Kyoto. - Hong Kong Airport WiFi: Free Access and How to Connect (2026) URL: https://cosim.io/en/blog/hong-kong-airport-wifi HKIA's free WiFi needs no SMS code or passport, just a browser and a terms screen. Here's how to connect, what it can't do once you leave the terminal, and how to arrive already online. - Taoyuan Airport WiFi: Free Networks and How to Connect (2026) URL: https://cosim.io/en/blog/taoyuan-airport-wifi Taoyuan Airport's free WiFi (SSID: Airport Free WiFi) needs no password or registration. Here's how to connect at TPE, what the network handles well, whether the Airport MRT has WiFi, and why installing an eSIM before you fly beats even Taoyuan's famously good SIM counters. - Changi Airport WiFi: Free, Fast, and How to Connect (2026) URL: https://cosim.io/en/blog/changi-airport-wifi Changi Airport's #WiFi@Changi is free in every terminal with no registration — the old SMS codes and passport kiosks are gone. How to connect, what the network handles, where it ends, and why an eSIM installed before you fly makes arriving in Singapore smoother. - Haneda Airport WiFi: Free Networks and How to Connect (2026) URL: https://cosim.io/en/blog/haneda-airport-wifi Haneda Airport's free HANEDA-FREE-WIFI network covers all three terminals with no password and no sign-up. Here is how to connect, where coverage actually stops, and why the 13-minute Monorail ride into Tokyo is the real reason to install a Japan eSIM before you fly. - Does Google Maps Work Abroad Without WiFi? Here's How URL: https://cosim.io/en/blog/google-maps-offline-abroad Google Maps works abroad with cellular data from a travel eSIM, roaming, or a local SIM. Without data, only pre-downloaded offline maps work, and they skip live traffic, transit schedules, and business search. Here is how to set up both. - Internet in Japan for Tourists: What Actually Works (2026) URL: https://cosim.io/en/blog/internet-in-japan-for-tourists Free Wi-Fi in Japan is real but patchy and registration-heavy, so a travel eSIM installed before departure is the simplest way to have continuous data from the moment you land. Here is how the real options compare, what free Wi-Fi actually covers, and how much data a typical trip needs. - Internet in Thailand for Tourists: SIM, eSIM & Wi-Fi Guide (2026) URL: https://cosim.io/en/blog/internet-in-thailand-for-tourists Tourist SIM counters, eSIMs you install before you fly, pocket Wi-Fi and public hotspots — what actually works for staying online in Thailand. - Incheon Airport WiFi: Free, Unlimited, and How to Connect (2026) URL: https://cosim.io/en/blog/incheon-airport-wifi Incheon International Airport has offered free, unlimited WiFi in both terminals since 2008: join AirportWiFi, accept the terms, and you are online — no password, no registration. Here is how to connect, what the free network handles well, where it stops (the AREX ride into Seoul), and why installing a South Korea eSIM before you fly is the better arrival plan. - Suvarnabhumi Airport WiFi: Free Access, Time Limits & Better Options (2026) URL: https://cosim.io/en/blog/suvarnabhumi-airport-wifi Bangkok Suvarnabhumi has free WiFi — with email sign-up, daily time limits, and a 3-hour app option. How both tiers work, and what to plan for the moment you leave the terminal. - Narita Airport WiFi: Is It Free, and How Do You Connect? (2026) URL: https://cosim.io/en/blog/narita-airport-wifi FreeWiFi-NARITA covers all three terminals with no password and no time limit — how to connect, what it handles well, and why your arrival plan still needs mobile data. --- ## Pages - Homepage: https://cosim.io - Data Only Plans: https://cosim.io/en/data-only - co:sim ONE card: https://cosim.io/en/one-card - co:sim Challenge Card: https://cosim.io/en/challenge-card - Coverage Map: https://cosim.io/en/coverage - FAQ: https://cosim.io/en/faq - Install Guide: https://cosim.io/en/resources/install-guide - Supported Devices: https://cosim.io/en/resources/supported-devices - Data Calculator: https://cosim.io/en/resources/data-calculator - Terms of Service: https://cosim.io/en/policies/terms - Privacy Policy: https://cosim.io/en/policies/privacy - Refund Policy: https://cosim.io/en/policies/refund ## Contact - Live chat: Available 24/7 on https://cosim.io - Website: https://cosim.io